Mark Burnett receives his flu vaccine in support of Walgreens and U.N. Foundation in Beverly Hills, Calif. Walgreens, CVS and other pharmacies seek Medicare reimbursement for vaccinations (Photo by Matt Sayles/Invision for Walgreens/AP Images)

“Our immunizations program continues to demonstrate the important role our 27,000 pharmacists are playing in healthcare delivery today, providing greater access than ever before to a wide range of CDC-recommended vaccines, as well as other important, preventive healthcare services,” Walgreens said in a statement.

It could bring in hundreds of millions of dollars to the drugstore industry given the growing business of providing vaccinations. In the most recent year statistics were made available, Walgreens said the number of immunizations its drugstores administered jumped by more than 1 million to 9.6 million in fiscal 2014 from 8.5 million in its fiscal 2013.

The legislation would change current Medicare rules that don’t consider pharmacists healthcare providers with the ability to be reimbursed by the government for routine treatment. This idea is already changing in the private sector, with more commercial insurers covering vaccinations administered by pharmacists.